samples/rust/rust_print.rs

// SPDX-License-Identifier: GPL-2.0

//! Rust printing macros sample.

use kernel::pr_cont;
use kernel::prelude::*;

module! {
    type: RustPrint,
    name: "rust_print",
    author: "Rust for Linux Contributors",
    description: "Rust printing macros sample",
    license: "GPL",
}

struct RustPrint;

impl kernel::Module for RustPrint {
    fn init(_module: &'static ThisModule) -> Result<Self> {
        pr_info!("Rust printing macros sample (init)\n");

        pr_emerg!("Emergency message (level 0) without args\n");
        pr_alert!("Alert message (level 1) without args\n");
        pr_crit!("Critical message (level 2) without args\n");
        pr_err!("Error message (level 3) without args\n");
        pr_warn!("Warning message (level 4) without args\n");
        pr_notice!("Notice message (level 5) without args\n");
        pr_info!("Info message (level 6) without args\n");

        pr_info!("A line that");
        pr_cont!(" is continued");
        pr_cont!(" without args\n");

        pr_emerg!("{} message (level {}) with args\n", "Emergency", 0);
        pr_alert!("{} message (level {}) with args\n", "Alert", 1);
        pr_crit!("{} message (level {}) with args\n", "Critical", 2);
        pr_err!("{} message (level {}) with args\n", "Error", 3);
        pr_warn!("{} message (level {}) with args\n", "Warning", 4);
        pr_notice!("{} message (level {}) with args\n", "Notice", 5);
        pr_info!("{} message (level {}) with args\n", "Info", 6);

        pr_info!("A {} that", "line");
        pr_cont!(" is {}", "continued");
        pr_cont!(" with {}\n", "args");

        Ok(RustPrint)
    }
}

impl Drop for RustPrint {
    fn drop(&mut self) {
        pr_info!("Rust printing macros sample (exit)\n");
    }
}